package com.atguigu.mall.mallorder.listener;

import com.alipay.api.AlipayApiException;
import com.alipay.api.internal.util.AlipaySignature;
import com.atguigu.mall.mallorder.config.AlipayTemplate;
import com.atguigu.mall.mallorder.service.OrderService;
import com.atguigu.mall.mallorder.vo.PayAsyncVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;

/** 订单支付成功监听器 */
@RestController
public class OrderPayedListener {

  @Autowired private OrderService orderService;

  @Autowired private AlipayTemplate alipayTemplate;

  @PostMapping(value = "/payed/notify")
  public String handleAlipayed(PayAsyncVo asyncVo, HttpServletRequest request)
      throws AlipayApiException, UnsupportedEncodingException {
    // 只要收到支付宝的异步通知，返回 success 支付宝便不再通知
    // 获取支付宝POST过来反馈信息
    // TODO 需要验签
    Map<String, String> params = new HashMap<>();
    Map<String, String[]> requestParams = request.getParameterMap();
    for (String name : requestParams.keySet()) {
      String[] values = requestParams.get(name);
      String valueStr = "";
      for (int i = 0; i < values.length; i++) {
        valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";
      }
      // 乱码解决，这段代码在出现乱码时使用
      // valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
      params.put(name, valueStr);
    }

    boolean signVerified =
        AlipaySignature.rsaCheckV1(
            params,
            alipayTemplate.getAlipay_public_key(),
            alipayTemplate.getCharset(),
            alipayTemplate.getSign_type()); // 调用SDK验证签名

    if (signVerified) {
      System.out.println("签名验证成功...");
      // 去修改订单状态
      String result = orderService.handlePayResult(asyncVo);
      return result;
    } else {
      System.out.println("签名验证失败...");
      return "error";
    }
  }

  @PostMapping(value = "/pay/notify")
  public String asyncNotify(@RequestBody String notifyData) {
    // 异步通知结果
    return orderService.asyncNotify(notifyData);
  }
}
